ANSWER

EXPLANATION
The given isosceles tra-pezoid has legs

and

The base is bc=5y+2.
The length of the legs of the isosceles tra-pezoid are equal.
This implies that,

Thus,

Group similar terms,


Divide both sides by 9.


Answer:
isosceles triangle
Step-by-step explanation:
An isosceles triangle has 2 congruent sides
The triangle described here has 2 congruent sides of 8 cm
The triangle is isosceles
When it says 7/10, it actually means 70%, so you have to find 70% of 120.
<span>
70 % of 120
= 70% x 120
= (70/100) x 120
= (8400/100)
= 84
Answer: 84</span>
Answer:
0 +256i
Step-by-step explanation:
According to Euler's formula, ...
(4 cis π/8)^4 = (4^4) cis (4×π/8) = 256 cis π/2 = 0 +256i
_____
"cis" is an abbreviation sometimes used for "cosine + i×sine". It simplifies writing the expression. Engineers sometimes simplify it further, writing 4∠(π/8) for the expression in this problem statement.